425378340 has 36 divisors (see below), whose sum is σ = 1290314844. Its totient is φ = 113434176.

The previous prime is 425378339. The next prime is 425378347. The reversal of 425378340 is 43873524.

It is a happy number.

425378340 is a `hidden beast` number, since 4 + 2 + 537 + 83 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 208051776 + 217326564 = 14424^2 + 14742^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 425378295 and 425378304.

It is not an unprimeable number, because it can be changed into a prime (425378347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1181427 + ... + 1181786.

It is an arithmetic number, because the mean of its divisors is an integer number (35842079).

Almost surely, 2^425378340 is an apocalyptic number.

It is an amenable number.

425378340 is an abundant number, since it is smaller than the sum of its proper divisors (864936504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425378340 is a wasteful number, since it uses less digits than its factorization.

425378340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363228 (or 2363223 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 425378340 is about 20624.7021796680. The cubic root of 425378340 is about 752.0703330361.

The spelling of 425378340 in words is "four hundred twenty-five million, three hundred seventy-eight thousand, three hundred forty".